Skip to content
SOLVENCY

Head to head

GPT-5.3 Codex vs Mistral Medium 3.5

GPT-5.3 Codex: currentMistral Medium 3.5: currentheavy tier

No verdict

Cost per solved task needs a published pass rate for both models. At least one has none, so it is reported as missing rather than estimated.

verified 2026-08-21 · prices from each provider's pricing page

Input $/M tokens

lower is better

  • GPT-5.3 Codex$1.75
  • Mistral Medium 3.5$1.5

Output $/M tokens

lower is better

  • GPT-5.3 Codex$14
  • Mistral Medium 3.5$7.5

Cost per solved task

needs a pass rate for both

  • GPT-5.3 Codexmissing
  • Mistral Medium 3.5missing
GPT-5.3 CodexMistral Medium 3.5
Input $/Mtok$1.75$1.5
Output $/Mtok$14$7.5
Cached input $/Mtok$0.175missing
Pass ratemissingmissing
Pass rate sourcemissingmissing
Cost basismissingmissing
Cost per solved taskmissingmissing

verified 2026-08-21 · heavy task tier; measured rows ignore the tier· Methodology· GPT-5.3 Codex· Mistral Medium 3.5